Mizuma N, Kabemura T, Akahoshi K, Yasuda D, Okabe H, Chijiiwa Y, Nawata H, Matsui N
Department of Internal Medicine, Saiseikai-Fukuoka General Hospital, and Faculty of Medicine, Kyushu University, Fukuoka, Japan.
Gastrointest Endosc. 1997 Dec;46(6):549-52. doi: 10.1016/s0016-5107(97)70013-0.